That would do good for what you say you want. However don't be surpised if the pet is not welcome by many raiders in their raids. As a pet does not have as fine of control as a player and thus can make a mess of a raid even when controlled by a good player.

I was actually trying to build a Paragon/Champ/Riftblade spec, but how in the hell do you know what abilities to actually use? That's what confuses me the most. Between all the "instants" you get from the branches, and then all the abilities from the roots, how do you know whats best?